<Following patch from Martin Diehl>
	o [CRITICA] Do all serial driver config change in process context
	o [CORRECT] Safe registration of dongle drivers
	o [FEATURE] Rework infrastructure of SIR drivers
	o [CORRECT] Port irtty driver to new SIR infrastructure
	o [CORRECT] Port esi/actisys/tekram driver to new SIR infrastructure
		<Note : there is still some more work to do around SIR drivers,
		 such as porting other drivers to the new infrastructure, but
		 this is functional and tested, and old irtty is broken>